Sharpening device for moving knife-blades.



No. 747,476. PATENTED DEG. 22,1903.

I W. D. QUIGLEY & J. H. GAY. SHARPENING DEVICE FOR MOVING KNIFE BLADES.

APPLIO ATION-FILED NOV. 12.1902. N0 MODEL.

WITNESSES: INVENTORS J 7, W' BY '5 7 7 M a! ZAIOLuuJ-s -AITORNEY No. 747,476. PATENTED DEC. 22, 1903..

W. D. QUIGLEY & J. H. GAY. SHARPENING DEVIGE FOR MOVINGKNIFE BLADES.

APPLICATION FILED HQV.12.1902.

4 SHEETSS HEET 2.

no MODEL.

INVENTOR 6 WITNESSES:

ATTORNEY THE Noam: war:

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No. 747,47 PATENTED DEC. 22, 1903.

W. 1). Q-UIGLBY & J. HLGAY. SHARPENING DEVICE FOR MOVING KNIFE BLADES.

APPLIUATION FILED NOV.12.- 1902.

4 SHEETS-SHEET 3.

N0 MODEL.

1n: mums PETERS cc, momvunlcjwAsnmnm No. 747,476. PATENTED DEC. 22, 1903.

W. D. QUIGLEY & J. H. GAY. SHARPENING DEVICE FOR-MOVING KNIFE BLADES.

APPLICATION FILED NOV. 12.1902.

4 SHEETS-SHEET .4.

H0 MODEL.

M M fa UNITED STATES Patented December 22, 1903.

P TENT OFFICE.

WILLIAM DAVID QUIGLEY AND JOSEPH HENRY GAY, OF NEWARK, NEW JERSEY.

SHARPENING DEVICE FOR MOVING KNIFE-BLADES.

SPECIFICATION forming part of Letters Patent No. 747,476, dated December 22, 1903. Original application filed February 3, 1902, Serial No. 92,449. Divided and this application filed November 12,1902.

(No model.

T at whom it may concern:

Beit known that WG,WILLIAM DAVID QUIG- LEY and JOSEPH HENRY GAY, citizens of the United States, and residents of Newark, Essex county, New Jersey, have invented a new and useful Improvement in Sharpening Devices for Moving Knife-Blades, of which the following is a specification.

This application is a division of our application, Serial No. 92,449, filed February 3, 1902, and relates more particularly to the construction and arrangement of the knife-sharpening devices employed in the leather-splitting machine disclosed in said application.

The invention consists in said construction and arrangement of said devices, as more particularly pointed out in the claims. 7 V,

In the accompanying drawings, Figurel is a side elevation of the left-hand end of the.

leather-splitting machine described in our aforesaid application, showing our improved knife-sharpening devices in place. Fig. 2is an enlarged detail view of the same end of the machine in side elevation with parts broken away to show more clearly the construction of the supports and adjusting do vices for the rotary grinder. Fig. 3 is an enlarged detail view of the lower portion of the same end of the machine in front elevation with parts broken away for the purpose above stated. Fig. 4 is a section on the line b b of Fig. 3, taken in the direction of the arrow 19. Fig. 5 is aside elevation of the steel disk and its support. Fig. 6 shows the device for raising and lowering the lower frame K.

Similar'letters of reference indicate like the table, which wheels are rotated. One of said wheels Nis positively driven,the other (not shown) is rotated by the knife-blade acting as a belt. The knife is placed so that its edge comes between the rollers H L. The free end of the hide is introduced between the drawing-in rollsH L and is'carried by the rotation thereof, so that its advancing edge meets the edge of the moving knife M and is so split.

The main driving-pulley Q, Fig. 1, is on a short shaft which carries a straight pinion Q (dotted lines) and a beveled pinion. (Not shown.) Pinion Q engages with pinion Q on the shaft of wheel N, and so rot-ates said wheel, and thus causes movement of the bandknife. The beveled pinion on the driving-shaft through intermediate gearing (not shown) rotates the beveled pinion Q Pinion Q engages with pinion Q on shaft Q and from shaft Q by suitable gearing both rolls H and L are driven.

All of the foregoing parts, together with the various adjusting devices'of the machine, are fully described in our aforesaid application.

The shape of the knife M is shown in crosssection in Fig. 2that is to say, it'has one side beveled to form an edge with its opposide is underneathwhen the knife is acting on the hide. Inasmuch as the edge of the knife becomes dulled in use we provide means for constantly sharpening the same, while maintaining the angle of bevel with the flat edge unimpaired by the following devices: V V, Figs. 1, 2, and 3, are brackets bolted on the under side of the table A. Between said brackets extends a frame V At the lower inner portions of said brackets are inclined guide-channels V to receive ribs V on the frame V Said frame is supported by the screw V", which is provided with adj usting-nuts V above and below the curved upper member of frame V On the front side of frame V are bolted journal-boxes V for the shaft V and said shaft carries an emery-wheel V and driving-pulley V. The

emery-wheel V is adjusted against the edge site flat side, and as here arranged the flat of the blade M to grind the bevel by means of the screw V its position then being as in Fig. 2, and it is rotated by the belt V on the driving-pulley, which belt leads from any suitable motor. The shaft V is threaded to receive a nut and disk V between which disk and the fixed disk V the emery-wheel is secured. In order to support the back of the blade and hold the edge up to the emerywheel, a fixed table or ledge V (shown broken away in Fig. 3) is provided, over which the blade travels. Through an outer flange V of said table passes a screw V", which bears against the back of the blade, as shown in dotted lines, Fig. 2. Said screw both supports the blade and serves to adjust it toward the emery-wheel. A jam-nut V is provided for holding the screw as adjusted.

A steel disk W, Fig. 6, is disposed, as shown in Fig. 1, so that the knife bears against its inclined under side. Said disk is pivoted by the adj usting-screws W in the yoke W Said yoke is pivoted in a bearing in the upper end of post W and said post is vertically adjustable in the fixed standard W. The yoke W is normally free to turn on its pivot. It may be clamped in position, if desired, by means of the set-screw W The disk and yoke can be raised and lowered by raising or lowering the post W in standard W and said yoke is fastened in place as adjusted by means of the set-screw W When the yoke W is not clamped, the spiral spring W attached to the upper adjusting-screw W and to any fixed abutment, is employed for bringing the under side of the disk W with regulated steady pressure against the blade. The object of the disk W is slightly to turn downward the extreme edge of the blade'in advance of the action of the grinding-wheel V upon it. This turned-over portion is ground 0% by wheel V leaving the final edgetrue and straight.

We claim 1. In combination with a longitudinallyrnovable knife-blade, a rotary grinder having its axis of rotation parallel to said blade and its circumferential periphery acting to produce a bevel thereon, and means for moving the said axis of rotation of said grinder in a plane at right angles to the plane of said bevel, substantially as described.

2. In combination with a longitudinallymovable knife-blade a rotary grinder having its axis of rotation parallel to said blade and its circumferential periphery acting to produce a bevel thereon, means for moving said blade in its own plane with reference to said grinder-and means for moving the axis of rotation of said grinder in a plane at right angles to the plane of said bevel, substantially as described.

3. The combination with a longitudinallymoving knife-blade, of the disk W, pivoted yoke W therefor, supporting-rod W for said yoke,and standard W receiving said rod,substantially as described.

4. The combination with a longitudinallymoving knife-blade, of the disk W and supporting-shaft therefor, pivoted yoke W setscrews W for adjusting said disk in said yoke, supporting-rod W for said yoke and standard W receiving said rod, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM DAVID QUIGLEY. JOSEPH HENRY GAY. Witnesses:

I. A. VAN WART, WM. H. SIEGMAN. 

